These flights will work with any nylon, poly or carbon fiber tradition 4 prong shaft. Aluminum or other metal shafts are not recommended
I have broken only the clear blue Robson flights. Maybe this batch was brittle, but that has been the case.
I have been using Robson Flights for a while now. They are great but you do get a trampoline effect sometimes when a dart hits one that’s already in the board. Just wish they were a bit less flexible.